Back when I first started reading, legendary status used to mean something, it meant that poster had something useful to contribute. Now it just means they merited themselves with an alt or they bought sMErits online and they spammed the forum enough times.
What are you talking about? "Back in your day" before implementtation of merit system it was exactly the opposite, as all you had to is post 1 meaningless oneliner shitpost post per day for ~3 years in order to reach Legendary rank, while now you actually have to write meaningful (to some degree) post in order to reach higher ranks.
The thing that grinds my gears the most is that there are legendary accounts with a join date of less than a year ago
Impossible to happen as you still need to meet activity requirement, no matter how many merits you have.
and here's my account which is operated by a normal user, who has contributed to actual discussion about actual real issues since 2015 with a Senior member level LOL!
Since your activity is below Legendary requirement (775), first thing that you would have to change is to post more consistently and you might reach Legendary rank, evenbtually.